CVE-2026-104636

Gitea validated the initial remote URL for push mirrors, wiki remote checks, and fetches of migrated pull request heads, but the subsequent raw Git operations followed HTTP redirects without revalidating the destination. A repository administrator using a policy-allowed endpoint that redirects could make Gitea's Git client send requests to an address that the outbound host policy would otherwise block. The impact depends on the configured policy and the internal services reachable from the server.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://blog.gitea.com/release-of-28.0.0/	Release Notes
https://github.com/go-gitea/gitea/pull/39426	Patch
https://github.com/go-gitea/gitea/releases/tag/v28.0.0	Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-g4hw-fg4c-89mq	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

History

13 Oct 2026, 17:18

Type	Values Removed	Values Added
References	~~() https://blog.gitea.com/release-of-28.0.0/ -~~	() https://blog.gitea.com/release-of-28.0.0/ - Release Notes
References	~~() https://github.com/go-gitea/gitea/pull/39426 -~~	() https://github.com/go-gitea/gitea/pull/39426 - Patch
References	~~() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 -~~	() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 - Release Notes
References	~~() https://github.com/go-gitea/gitea/security/advisories/GHSA-g4hw-fg4c-89mq -~~	() https://github.com/go-gitea/gitea/security/advisories/GHSA-g4hw-fg4c-89mq - Mitigation, Vendor Advisory
CPE		cpe:2.3:a:gitea:gitea::::::::
First Time		Gitea gitea Gitea

07 Oct 2026, 21:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

06 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 20:17

Updated : 2026-10-13 17:18

NVD link : CVE-2026-104636

Mitre link : CVE-2026-104636

CVE.ORG link : CVE-2026-104636

JSON object : View

Products Affected

gitea

gitea

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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